Advertising device



V. S. MORLEY.

ADVERTISING DEVICE.

APPLICATION FILED Auml. |920.

Patented Sept. 26, 1922.

Patented Sept. 26, 1922.

"VTV'IAN STREATFEILD MORLEY, OF TANKERTON,'ENGLAND;

ADVERTISING nnvicii. "5.... i

Application filed August 17, 1920. Serial No. 404,056.

To aZZw/wm z'zmag/ concern Be it known that I, ViviAN STREATrnILo MoRLnY, a subject of the King of Great Britain, residing at W'ynn House, Wynn Road, Tanker-ton, Kent, England, have invented a new and useful Improvement in Advertising Devices, of which the following is a specification. i

This invention relates to improved apparatus for obtaining moving colour effects suitable for advertising, displaying and. the like, and more especially to that type of apparatus in which a rear screenis viewed through a front screen placed a certain distance in front thereof, the front screen having on it a number of opaque lines having between them clear spaces, the opaque lines being adapted to cover different portions of the rear screen as the angle of view is altered.

According to this invention I lprovide a front screen of transparent material with opaque lines which are parallel whilst I provide therear screen with lines which are of two different alternate colours and are parallel to those on the front screen but are of slightly greater or less width than those of the front screen. The relative width of the lines of the front and rear screens is such that over the breadth covered by each pair of colour bands there shall be a number of pairs of colourediines on the rea-r screen, one greater or'one'less than the number of pairs .ofclear yand-opaque lines on the front screen. i In cases where the angle subtended by the width of the screen to the eye is large, the rulings on the rear screen may be of equal width and in register with the front screen.

Where it is desired that the colour bars shall travel in opposite directions in different portions of the screen, the width of the lines on either of the screens in-one portion of the screen is such that it subtends a greater angle to the eye of the observer than that subtended by the width of the lines.

on the other screen, while the other portion of the screen has lines of which the width. subtends a less angle to the eye of the observer than that subtended by the width of the lines on the other screen.

My invention is illustrated in the accompanying drawings, in which Figure 1 is 'asection of the apparatus to a small scale, Figure 2 shows a front screen, Figure 3 shows a rear screen, Figure 4: shows the effect producedwhen the screens shown in Figures@ and '3 are 'employed in the apparatus shown in Figurel and Figure 5 is a diagram showing how the effect of contrary movement "is brought about. Figure 6 is a front screen, Figure`7 is a rear screen and Figure 8 shows the effect produced when Figures Gand 7 are employed.

In' Figure 1, l is a front screen, 2 a rear screen arranged a distance apart in acasing 3. 4 are lampsimounted on the baclrof the casing '3 and serve to illuminate the rear screen '2. 5 is a ground glass screen interposed between the rear screen andthe lamps 4: to distribute the light. f

Referring now to Figures, 3, `tand 5, Figure 2 shows a front screenhaving opaque lines with yclear spaces Abetween thei'n 'of width equal to that ofthe lines. kFigure 3 shows arear screen of translucent material,

the upper half ofthe rear screen has lines of alternate colors and vof less width and ythe lower vhalf 'has lines Vof 'alternate colors and of greater width than 4those of the front screen, each line'of colorbeing represented by the sp'a'te between two adjacent vertical lines, one 'color being indicated by lines slanting in one direction andthe other color being indicated by lines slanting in the other direction.` The effect producedin an apparatus employing these screens is shown in Figure 4, The reason for lthis apparent movement can be explained by referring to Fig'ure, which shows on alarge scale ja strip of the front screen, Figure'2,"arranged in front of the rear screen, Figure 3.

Considering the upper half of the screen, and taking any individual clear space it, it will be noticed that a portion of a t5 line and av portion of an a line is visible through h. If the observer now moves to the right he will see more of the (5 line and less of the a line through space it, and he will eventually reach a position in which he will see through space 71, parts of o: and in the proportions originally seen through space g, Thus g has apparently moved up to h. and thus the whole wave of colour has apparently moved towards the right, that is, in the same direcsidering the lower half of the rear screen, in which the lines are of greater width than Vthose of the front screen, if the observer move toward the right he will see through any clear space, say h, more of the line and less of the a line, and will eventually tion as that of the observer. Similarly, conreach a position in which he sees through space la the proportions of cz and which he originally saw through space rlhus e" has apparently moved up to 7L., and the whole wave of colour has apparently moved to the left, that is to say, in the direction opposite to that of the observer.

Figures 6 and 7 show front and rear screens respectively by means of which colour bars of varying width appear to move at varying speeds as shown diagrainniatically in Figure 8. The front screen, Figure 6, is provided with parallel lines ot varying widths, the rear screen being provided with parallel lines of equal widths.

What l claim is 1. In an advertising device, the combination of two screens one of which is provided with a plurality ot'parallel opaque linesarranged thereon to obtain intervening clear spaces while the other screen is provided with a plurality of color lines of two dierent alternate colors'parallel to but ldi'ering slightly in width from the lines on the first mentioned screen.

2. ln an advertising device, the combination ot two screens one of which is provided with a plurality of parallel opaque lines arranged thereon to obtain intervening clear spaces, while the other screen is provided with a plurality of color lines of two alternate colors parallel to the lines on the irst mentioned screen, some of the color lines being of greater and some of less width than the lines ot the lirst mentioned screen.

3. In an advertising device, the combination of two screens one of which is provided with a plurality of parallel opaque lines of equal width arranged thereon to obtain intervening clear spaces, while the other screen is provided with a plurality of color lines of two dilierentalternate colors parallel to lo-ut differing slightly in width from the lines on the rst mentioned screen.

4. lln an advertising device, the combination ot' two screens one of which isprovided with a plurality of parallel opaque lines arranged thereon to obtain intervening clear spaces, while lthe otherscreen is provided with a plurality ot color lines ot two diffen ent alternate colors parallel to but differing slightly in width from the corresponding opaque' lines on the irst mentioned screen.

5. lln an advertising device, the combination of two screens one of which is provided with a plurality of parallel opaque lines arranged thereon to obtain intervening clear spaces, while the other screen is provided with a plurality of color lines ot two different alternate colors parallel to but didering slightly in width from the opaque lines on the first mentioned screen, so that diierent portions ol the color lines on the one screen are seen through the clear spaces of the other screen by an observer as the angle of view is altere 6. ln an advertising device, the combination of two screens one of which is provided with a plurality of parallel opaque lines of varying width arranged thereon to obtain intervening clear spaces while the other screen is provided with a plurality of color lines of two different alternate colors parallel to but differing slightly in width from the opaque lines on the first mentioned screen.

7. In an advertising device, the combinaf tion of two screens one ot which is provided with a plurality of parallel opaque linesl of varying width arranged thereon toobtain intervening clear spaces while the other screen is provided with a plurality of color lines of two dierent alternate colors of equal width. and parallel to but diering slightly in width from the opaque lines on the rst mentioned screen.

Vil/THAN STREATFIEHLD ltltlltllfll( 

